Having starters that can't go deep when you need them to will burn it out also.
You have to allow them to go deeper sometimes. Hyde has a clear philosophy with when to pull starters. He decides that inning X will be the starter's last one. Then, as soon as a runner reaches base, he pulls said starter. Regardless of whether it's a blooper or a seeing eye grounder, he pulls the starter.
This happened twice last week vs LAA and as a result, the bullpen was gassed and cost us game 4 of that series. In game 2, Kremer settled down after a 30-31 pitch first inning and was cruising. with 2 outs in the 6th, an easy ground ball that should've been fielded easily for the 3rd out got through because Gunnar cut in front Mateo, which allowed it to sneak through. At 95 pitches, Kremer was still very much in control and should've been given the opportunity to finish the inning. Instead, Baker is brought in....the guy who sucks with inherited runners, allowed 2 singles and a run before getting out of it. From there, it was Perez and Cano.
The next night, Bradish was rolling along with a 3-1 lead in the 7th. After allowing a bloop single that deflected off Frazier's glove, Hyde pulled Bradish at 94 pitches. He should've absolutely been given the opportunity to finish the inning. Instead, we went Coulombe, Cano and Bautista.
Those 2 decisions resulted in Cano not being available for Thursday's and stretched the bullpen in general, which was unable to hold the late lead and resulted in a tough loss.
Now, you could certainly make the case that, stuff happens and relievers are going to give up runs sometimes and blow late lead sometimes. That's absolutely possible. With that said, I have a hard time accepting that in this instance because the bullpen could've been saved a bit by extending a little bit of trust to your starting pitchers and allowing the the chance to finish an inning later in the game. Particularly when (a) the starter is in control and (b) the batter that reached base did so in a fluky manner. There's playing by the numbers or "by the book", then there's watching the game that's happening in front of you and acting accordingly.